Need help on N1E115 cell line

Dear netters,
I would appreciate very much if somebody could help me with these
neuroblastoma cell line (N1E115). Is there anyone who can tell me about:
i) methods for differentiation
ii) phenotypic caracterization
iii) where I can get a reference in the litterature?
Thanks in advance
Anna BENCSIK
Lyon, FRANCE
Please send me your answers on my e-mail box :
bencsik at cimac-res.univ-lyon1.fr